— What impresses you most about your hometown?— The street,the length of which is four times ______ it was eight years ago.\x05A.that \x05B.as \x05\x05C.than \x05\x05D.what为什么选D不选A为什么不选B

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— What impresses you most about your hometown?— The street,the length of which is four times ______ it was eight years ago.\x05A.that \x05B.as \x05\x05C.than \x05\x05D.what为什么选D不选A为什么不选B

— What impresses you most about your hometown?— The street,the length of which is four times ______ it was eight years ago.\x05A.that \x05B.as \x05\x05C.than \x05\x05D.what为什么选D不选A为什么不选B
— What impresses you most about your hometown?
— The street,the length of which is four times ______ it was eight years ago.
\x05A.that \x05B.as \x05\x05C.than \x05\x05D.what
为什么选D不选A
为什么不选B

— What impresses you most about your hometown?— The street,the length of which is four times ______ it was eight years ago.\x05A.that \x05B.as \x05\x05C.than \x05\x05D.what为什么选D不选A为什么不选B
从句成分完整就要填WHAT,不完整填THAT

as有三种词性,介词,连词,副词。在这里后面是个从句,如果要用as也只能是用它的连词形式,但是从句不是个完整的句子,所以不能用as。(连词只能连接句子)所以不选as。详解可以看看词典,不懂的多翻翻词典很多都可以解决。希望回答对你有帮助。...

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as有三种词性,介词,连词,副词。在这里后面是个从句,如果要用as也只能是用它的连词形式,但是从句不是个完整的句子,所以不能用as。(连词只能连接句子)所以不选as。详解可以看看词典,不懂的多翻翻词典很多都可以解决。希望回答对你有帮助。

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不选A的原因是THAT是用于谓语从句,前面并没有先行词可供解释,所以这句并不是谓语从句
不选B的原因是前面说The length of 所以不需用as后面的What is was构成宾语从句

缺成分
补充完整 it was what eight years ago.
IT作形式主语,WHAT是真正主语,不能省
that作宾语或做连词。不能作主语